Hmmm. Hard question to answer .. not sure of the system you are refering to. However with out reference to pair count, generally, for Norstar, for paging there is a audio output pair and a dry contact relay and for ringing there is a dry contact for CO ringing and for external extention ringing the algo type ringer is attached to the back of the phone set and enabled in programming (as is the dry CO ringer contacts). To connect the paging, audio out to amp would be one leg of contact relay and one leg of audio with the left over legs connected. For external ringing the dry contacts would be connected directly to the external ring generator (algo, bogen NR100) and hence to a horn or inserted ringing noise on the paging system.
Rgds
PhM
